{% load bootstrap3 %}
<!DOCTYPE html>
<html lang='zh'>
    <head>
        <meta charset="utf-8">
        <meta http-equiv="X-UA-Compatible" content="IE=edge">
        <meta name="viewport" content="width=device-width, initial-scale=1">

        <title>学习笔记</title>

        <link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/3.4.1/css/bootstrap.min.css">  
        <script src="https://cdn.staticfile.org/jquery/3.4.1/jquery.min.js"></script>
        <script src="https://cdn.staticfile.org/twitter-bootstrap/3.4.1/js/bootstrap.min.js"></script>

    </head>

    <body>
        <!--静态导航栏-->
        <nav class="navbar navbar-default navbar-static-top">
            <div class="container">

                <div class="navbar-header">
                    <button type="button" class="navbar-toggle collapsed"
                        data-toggle="collapse" data-target="#navbar"
                        aria-expanded="false" aria-controls="navbar">
                    </button>
                    <a
                        class="navbar-brand"
                        href="{% url 'learning_logs:index' %}">
                        主页
                    </a>
                </div>

                <div id="navbar" class="navbar-collapse collapse">
                    <ul class="nav navbar-nav">
                        <li>
                            <a href="{% url 'learning_logs:topics' %}">主题</a>
                        </li>
                    </ul>

                    <ul class="nav navbar-nav navbar-right">
                        {% if user.is_authenticated %}
                        <li><a>Hello, {{ user.username }}.</a></li>
                        <li><a href="{% url 'users:logout' %}">注销</a></li>
                        {% else %}
                        <li><a href="{% url 'users:register' %}">注册</a></li>
                        <li><a href="{% url 'users:login' %}">登录</a></li>
                        {% endif %}
                    </ul>
                </div><!--/.nav-collapse -->

            </div>
        </nav>

        <div class="container">

            <div class="page-header">
                {% block header %}{% endblock header %}
            </div>
            <div>
                {% block content %}{% endblock content %}
            </div>

        </div><!-- /container -->

    </body>
</html>